Alexandeb wilkinson



(No Model.)

A A. WILKINSON. GABLE FOR TLEGRAPHIG lAND OTHER PURPOSES. No. 301,417.

'Patented'.ulyl, 1884.

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UNITED STATES PATENT OFFICE.

ALEXANDER WILKINSON, OE LONDON, ENGLAND.

CABLE FOR TELEGRAPHIC AND OTHER PURPOSES.

SPECIFICATION forming part of Letters Patent No.301,417, dated July1,1884.

Application filed November 23. 1883. No model.) Patented in England June24, 1882, No. 3,003.

To all whom it may concern:

Be it known that I, ALEXANDER WILKIN- sON, a subject of the Queen ofGreat Britain, residing at London, England, have invented certain newand useful Improvements in Cables for Telegraphic and other Purposes,(for which I have obtained Letters Patent in Great Britain, bearing dateJune 24, 1882, No. 3,003, of which the following is a full, clear, andexact specification.

The object of this invention is to provide a novel and efficient cablefor telegraphing, telephoning, and electric-lighting purposes, which isalso capable of serving` as a gassupply fordistant stations, whichobject I accomplish in the manner and by the means hereinafter describedand claimed, reference being had to the accompanying drawings, in which-Figure lis a sectional plan view of a cable constructed in accordancewith my invention, and Fig. 2 a similar View showing a modification. l

In carrying my invention into effect I employ an interior tube, l, whichis composed of wire, coiled or spun upon a mandrel of suitable diameter,each coil being in direct contact with the adjoining one, whichcoiledwire tube is coated with tin, or a compound thereof, by passingthe tube through a bath l of the molten metal, thus not only providing athin coating, but filling up the interstices between the `coils on theexterior of the tube.

The tinned coiled-wire tube is then covered with some suitableinsulating material, 2d such, for example, as rubber-and upon this iscoiled a naked wire, 3,-with the coils either in contact or separated,as required. These coils may extend in the same or in a reversedirection to those of the interior tube, according to the degree offlexibility or rigidity it is required to impart to the structure. Thesecondary coiled wire 3 is then covered with insulating material, 4-suchas rubberand, if preferred, this second layer of insulating material maybe covered by a tube, 5, of braided material, or wrapped with suchbraided material, for protecting the structure from the induences of theatmosphere or other destructive elements.

Instead of coating and filling the interstices of the coiled-wire tube lwith tin, I may pass it through a bath of insulating material for thesame purpose, on which the secondary wire 3 is coiled.

In the modification shown in Fig. 2, I con struct the interior tube, l,of two layers of coiled wire, which are effectually coated or coveredwith insulating material prior to being coiled, for the purpose o fpreventing false contact-points or derived currents, one of saidcoiled-wire tubes being inclosed Within the other, and the outer onecovered by abraided tube', 6, or wrapped with braided material. To thisbraided covering is applied the continuous covering 2, of insulatingmaterial, and upon the latter the secondary coiled wire 3 is arranged,While upon the secondary coil is a covering of braid, on which is placedthe insulating material 4, which in this instance contains a series oflongitudinal wires, 7, and upon the insulating material 4 is placed thebraided covering 5.

The interior coiled-wire tube serves as an efficient means for conveyinggas to be used for lighting or signaling purposes. The secondary coil ofwire 2 serves to transmit electric currents for telegraphing orelectric-lighting purposes, and the longitudinal Wires serve astelephone-wires. It will of course be obvious that the coiled-Wire innertube will also serve to transmit electric currents; and, further, thatall the wires can be used for any required purpose where an electriccircuit is required.

Having thus described my invention, what I claim, and desire to secureby Letters-Patent, Is-

1. A cable consisting of an interior tube, l, composed of coiled Wire,with all the coils in direct contact, and their interstices filled tomake a closed tube, the insulating-covering 2, the coiled naked wire 3,the insulating material 4, and the longitudinal wires in the insulatingmaterial 4, substantially as described.

2. A cable consisting of an inner tube, 1, composed of coiled Wire, withthe coils in direct contact, and their interstices iilled with tin orits described equivalent, the insulatingfcovering 2, the naked coiledwire 3 thereon, and the insulating material 4 on the coiled wire 3,substantially as described.

A. WILKINSON.

lVitnesses:

HENRY GARDNER, OHAELEs GEOssErErE, Both of 166 Fleet Street, London,England,

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